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Using the plastic opening tool, gently pry the headband cushion directly away from the plastic portion of the headband as shown. Pry the plastic portion a small amount and then move the opening tool sideways along on the headband. Repeat on both sides until the cushion separates from the top plastic part of the headband.

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Use the plastic opening tool to remove the black ring from the speaker. This will allow you to access the screws on the metal ring.

Congratulations, you now have access to the rest of the speaker!

For reassembly, the black ring cannot snap back into the speaker the way it was disassembled. It must first go inside the black lip of the ear cushion. The black lip is located on the back side of the ear cushion. Please refer to the last two pictures on this step.

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Use a 00 Phillips head screwdriver to remove the 3.9 mm Phillips screws holding the metal ring in place. There should be 7 in each earpiece.

Make sure the screws you've already removed don't fall into the speaker itself (the circular arrangement of holes on the red piece directly below the metal ring). The speaker itself is magnetic, so getting screws out can be tricky. You should have tweezers available in case a screw or other piece of metal does fall into the speaker.

Once all the screws are removed, the metal ring can be removed by hand.

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If the black part directly beneath the speaker assembly is broken and needs to be replaced, it can be easily removed by hand.

If replacing the speaker on the side of the headphones with the power button (as shown in photos), upon reassembly, make sure the foam is inserted as shown in the first picture. If it is forgotten or improperly seated, the speaker could make undesirable vibrations.